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3. Introduction and Features (Continued)
3.2 LED Indicators
LED
Orange Constant Lit
State
TR-313 is being
charged.
LED
Blink Quickly (Once
every 200 millisecond)
State
1. Data transmitting.
LED
Blink Quickly (Once per second)
State
TR-313 does not receive GPS fix
LED
Blink Quickly
State
Standby mode
Power Status LED
Red Constant Lit
Battery power is low
GSM LED
Constant Lit
1. TR-313 is
searching for GSM
network
2. No SIM card
inserted
GPS LED
Bluetooth LED (Optional function)
Blink Slowly (Once
every 1 seconds)
1. In Standby Mode,
network already
registered.
Blink Slowly (Once every 3
seconds)
TR-313 receives GPS fix
Blink Quickly (Once per second)
Connecting to Bluetooth device
7
Red Blink Quickly
USB configuration
mode
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